I picked up a 375-Remington Ultra Mag about 4-months ago. I have been shooting it at the range off & on since then.
I found the right load last week. The recoil is stout to say the least! Finding the right load has taken some time due to the heavy recoil.
My pet load is 100-grains of H-4831SC, Fed-215 primers, topped with 260-grain Nosler Accubonds. I have three targets with 3-shot groups that are 1/2" to 3/4"-groups.
I will only fire this rifle from the standing or prone position from this point forward. I have taken a beating from the bench to get to this point. I can't wait to see the results on black bear, deer , elk & antelope.